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tino4ka555 [31]
3 years ago
15

Here are two patterns made using identical rhombuses. Write one equation to show how to find the value of ​a​ and one equation t

o show how to find the value of ​b​. Then find both values.
Equation 1​ ________________________________________
Equation 2​ ________________________________________
Answer​ ​a​ = _________________________ and ​b​ = _________________________

Mathematics
1 answer:
algol133 years ago
4 0

Answer:

Equation 1​

6*a = 360°

Equation 2

2*a + 2*b = 360°

a = 60°

b = 120°

Step-by-step explanation:

From the first picture we can see that 6 angles a° made a complete circle, that is, 360°. So:

6*a = 360°

a = 360°/6 = 60°

From the second picture we can see that 2 angles a° and 2 angles b° made a complete circle, then:

2*a + 2*b = 360°

2*b = 360° - 2*60°

b = 240°/2 = 120°

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Semmy [17]

Answer:

The price of elasticity of demand is 2.59

Step-by-step explanation:

*<em> Lets explain how to solve the problem</em>

- During the past year the price of a laptop computer fell from

 $2950 to $2450

- During the same time period consumer sales increased from

 430000 to 619000 laptops

- <em>We need to find the price of elasticity of demand</em>

- <u><em>The rule of price elasticity is:</em></u>

  price elasticity = percentage of change in the quantity ÷

  percentage of change in price

* <em>Lets calculate the percentage of change in quantity and the </em>

<em>  percentage of chance in price</em>

∵ The percentage of increasing of quantity = (new - old)/old

∵ New = 619000 and old = 430000

∴ The percentage of increasing of quantity =

   \frac{619000-430000}{430000}*100=43.95%

∵ The percentage of decreasing of price = (old - new)/old

∵ New = $2450 and old = $2950

∴ The percentage of decreasing of price =

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- <em>Lets substitute these values in the equation above</em>

∴ Price of elasticity of demand = 43.95% ÷ 16.95% = 2.59

* The price of elasticity of demand is 2.59

7 0
4 years ago
Please help! find QPR
aleksley [76]

Answer:

m∡QPR = 25°

Step-by-step explanation:

solve for 'x':

8x + 7 + 9x + 16 = 40

17x + 23 = 40

17x = 17

x = 1

m∡QPR = 9(1) + 16

m∡QPR = 25°

7 0
3 years ago
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Answer:

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Step-by-step explanation:

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12=z

swap the sides of the equation

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3 0
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Answer:

x = 3

Step-by-step explanation:

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3x/3 = 9/3

x = 3

5 0
3 years ago
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Would really appreciate it...
Sindrei [870]

Answer:

All of the top row is invertible.

Step-by-step explanation:

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5 0
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